<template>
	<view>
		<!-- <my-search :bgcolor="'#ccc'" :radius="3"></my-search> -->
		<my-search @click="gotoSearch"></my-search>
		<view class="scroll-view-container">
			<!-- 左侧滑动 -->
			<scroll-view class="left-scroll-view" scroll-y :style="{height: wh + 'px'}">
				<block v-for="(item, index) in cateList" :key="index">
					<view :class="['left-scroll-view-item',index === active ? 'active' : '']" @click="activeChange(index)">
						{{item.cat_name}}
					</view>
				</block>
			</scroll-view>
			<!-- 右侧滑动 -->
			<scroll-view class="right-scroll-view" scroll-y :style="{height: wh + 'px'}" :scroll-top="scrollTop">
				<view class="cate-lv2" v-for="(item, index) in cateLevel2" :key="index">
					<view class="cate-lv2-title">
						{{ item.cat_name }}
					</view>
					<view class="cate-lv3-list">
						<view class="cate-lv3-item" v-for="(item2, index2) in item.children" :key="index2" @click="gotoGoodsList(item2)">
							<image :src="item2.cat_icon"></image>
							<text>{{ item2.cat_name }}</text>
						</view>
					</view>
				</view>
			</scroll-view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				wh: 0,
				cateList:[],
				active: 0,
				cateLevel2:[],
				scrollTop: 0
			};
		},
		onLoad() {
			// 获取设备信息
			const sysInfo = uni.getSystemInfoSync()
			//console.log('111',sysInfo)
			this.wh = sysInfo.windowHeight - 50
			this.getCateList()
		},
		methods:{
			async getCateList(){
				try{
					const {data:res} = await uni.$http.get('/api/public/v1/categories')
					console.log('分类列表',res)
					this.cateList = res.message
					this.cateLevel2 = res.message[0].children
				}catch(error){
					uni.$showMsg()
				}
			},
			activeChange(index){
				this.active = index
				this.cateLevel2 = this.cateList[index].children
				// console.log('二级数据',this.cateLevel2)
				this.scrollTop = this.scrollTop === 0 ? 1 : 0
			},
			gotoGoodsList(item){
				uni.navigateTo({
					url:'/subpkg/goods_list/goods_list?cid=' + item.cat_id
				})
			},
			gotoSearch(){
				uni.navigateTo({
					url:'/subpkg/search/search'
				})
			}
		}
	}
</script>

<style lang="scss">
.scroll-view-container{
	display: flex;
	.left-scroll-view{
		width: 120px;
		.left-scroll-view-item{
			line-height: 60px;
			background-color: #f7f7f7;
			text-align: center;
			font-size: 12px;
			&.active{
				background-color: #fff;
				position: relative;
				&::before{
					content: ' ';
					display: block;
					width: 3px;
					height: 30px;
					background-color: #C00000;
					position: absolute;
					left: 0;
					top: 50%;
					transform: translateY(-50%);
				}
			}
		}
	};
	.cate-lv2-title{
		font-size: 12px;
		font-weight: bold;
		text-align: center;
		padding: 15px 0;
	};
	.cate-lv3-list{
		display: flex;
		flex-wrap: wrap;
		.cate-lv3-item {
		    width: 33.33%;
		    margin-bottom: 10px;
		    display: flex;
		    flex-direction: column;
		    align-items: center;
		    image {
		      width: 60px;
		      height: 60px;
		    }
		    text {
		      font-size: 12px;
		    }
		  }
	}
}
</style>
